Daily Sunspot Evaluation
Observation Sheet Monday, 19 February 1979
There is no typed record for this day. The values below were read by computer from the table on the sheet; when in doubt, see the drawing. Details →
- Number of groups (g)
- 11
- Number of spots (f)
- 63
- Relative number (R)
- 173
- Observer
- GA
- Reading
- all checks consistent
- File
- 19790219.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 33 | 16 | 05E | 148 | 03E | 109 | |
| 2 | J – 2 | 27 | 56E | 97 | 54E | 115 | |
| 3 | J – 1 | -24 | 66E | 87 | 64E | 112 | |
| 4 | J – 1 | -23 | 80E | 73 | 78E | 114 | |
| 5 | J – 3 | -26 | 21E | 132 | 19E | 108 | |
| 6 | J – 1 | -41 | 70W | 223 | 72W | 97 | |
| 7 | G – 3 | -16 | 22W | 175 | 24W | 110 | |
| 8 | D – 7 | 7 | 26W | 179 | 28W | 113 | |
| 9 | J – 1 | 19 | 58W | 211 | 60W | 107 | |
| 10 | J – 1 | 2 | 16W | 169 | 18W | 105 | |
| 11 | H – 10 | 18 | 23W | 176 | 25W | 106 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.